Temporomandibular joint synovial chondromatosis with a traumatic etiology.

Synovial chondromatosis (SC) is a metaplastic disorder characterized by the formation of cartilaginous nodules inside the articular space. SC is uncommon in the temporomandibular joint (TMJ). A few reports suggest a correlation between a traumatic episode and the development of SC. The authors describe the diagnosis, treatment and follow-up of a patient with unilateral SC of the left TMJ in conjunction with bony resorption on the mandibular condyle and a clear traumatic etiology. They review and comment on previous reports in the literature.

[Paratesticular adenomatoid tumor: a report of nine cases]. / Tumor adenomatoide paratesticular: una serie de nueve casos.

INTRODUCTION: Paratesticular tumors are rare. Most of them are benign, and adenomatoid tumors are most common. These tumors sometimes infiltrate the testicular parenchyma and require differential diagnosis with malignant tumors. In such cases, intraoperative biopsy allows for performing conservative surgery. MATERIALS AND METHODS: A retrospective study of nine patients with paratesticular adenomatoid tumors seen during a nine-year period (2000-2008) is reported. RESULTS AND CONCLUSIONS: Patient age (mean, 49.6 years) and most common initial signs (tender nodule) are reported. The tumor most commonly occurred as a small, usually oval, nodule in the tail of epididymis. Our series included a case each of intraparenchymal tumor of the testis and tumor of the tunica vaginalis. Diagnosis was initially made based on a ultrasound scan and subsequently confirmed by histology. Differential diagnosis and surgical treatment, performed in all patients, are reported, and also the pathological features of surgical specimens.

Tumor adenomatoide paratesticular: una serie de nueve casos / Paratesticular adenomatoid tumor: a report of nine cases

Introducción: los tumores paratesticulares son raros. La mayoría son benignos, siendo el más frecuente el tumor adenomatoide. En ocasiones estos tumores infiltran el parénquima testicular y es necesario plantear un diagnóstico diferencial con tumores malignos, por lo que la biopsia intraoperatoria, en estos casos, permite realizar una cirugía conservadora. Material y métodos: presentamos de forma retrospectiva nuestra extraordinaria serie de 9 casos de tumores adenomatoides paratesticulares durante un periodo de 9 años (2000- 2008). Resultados y conclusiones: describimos la edad de los pacientes (media de 49,6 años) y la clínica de inicio (nódulo palpable doloroso). La localización de la lesión más frecuente fue en el epidídimo, que habitualmente se manifiesta como un nódulo de pequeño tamaño, generalmente oval en la cola del epidídimo. En nuestra serie tenemos un caso de lesión testicular intraparenquimatosa y otro en túnica vaginal; el resto se localizan en el epidídimo. El diagnóstico de sospecha fue por ecografía, con confirmación histológica posterior. Describimos el diagnóstico diferencial y el tratamiento quirúrgico, que se aplicó en el 100% de los casos, así como sus características anatomopatológicas(AU)

Introduction: Paratesticular tumors are rare. Most of them are benign, and adenomatoid tumors are most common. These tumors sometimes infiltrate the testicular parenchyma and require differential diagnosis with malignant tumors. In such cases, intraoperative biopsy allows for performing conservative surgery. Materials and methods: A retrospective study of nine patients with paratesticular adenomatoid tumors seen during a nine-year period (2000-2008) is reported. Results and conclusions: Patient age (mean, 49.6 years) and most common initial signs (tender nodule) are reported. The tumor most commonly occurred as a small, usually oval, nodule in the tail of epididymis. Our series included a case each of intraparenchymal tumor of the testis and tumor of the tunica vaginalis. Diagnosis was initially made based on a ultrasound scan and subsequently confirmed by histology. Differential diagnosis and surgical treatment, performed in all patients, are reported, and also the pathological features of surgical specimens(AU)

[Chromophobe renal cell carcinoma, an exceptional entity in childhood: a case report]. / Carcinoma renal de células cromófobas, una entidad excepcional en la infancia: caso clínico.

Chromophobe renal cell carcinoma (CRCC) is a rare variant of renal carcinomas arising from the intercalated cells of the distal renal tubule and representing 5% among all renal tumors. Its biological behaviour is variable, less aggresive than clear cell renal carcinoma. Histochemical, ultrastructural and molecular genetic characteristics are different from other renal carcinomas. Age at presentation is about the 6th decade of life. We report an exceptional 10 year-old boy case with a CRCC. Diagnostic and therapeutic aspects for the management of this tumor are reviewed.

Carcinoma renal de células cromófobas, una entidad excepcional en la infancia: caso clínico / Chromophobe renal cell carcinoma, an exceptional entiy in childhood: a case report

El carcinoma renal de células cromófobas (CRCC) es una variante rara de carcinoma renal que se origina de las células intercaladas del epitelio tubular distal y constituye un 5% de los tumores renales. Es un tumor de comportamiento biológico variable, menos agresivo que el carcinoma convencional de células claras. Presenta características histoquímicas, ultra estructurales y genéticas diferentes al resto de carcinomas renales. La edad de presentación suele ser hacia la 6ª década de vida. Presentamos un caso excepcional de CRCC en un niño de 10 años de edad. Se revisan los aspectos diagnósticos y terapéuticos del manejo de este tumor (AU)

Chromophobe renal cell carcinoma (CRCC) is a rare variant of renal carcinomas arising from the intercalated cells of the distal renal tubule and representing 5% among all renal tumors. Its biological behaviouris variable, less aggresive than clear cell renal carcinoma. Histochemical, ultrastructural and molecular genetic characteristics are different from other renal carcinomas. Age at presentation is about the 6th decade of life. We report an exceptional 10 year-old boy case with a CRCC. Diagnostic and therapeutic aspects for the management of this tumor are reviewed (AU)